I'm trying to learn more about the Astro Spectra PLUS. I saw where Mars referenced the vocon upgrade in another thread and it brought up a few questions. Is it as simple as getting a Astro Spectra in the split I want and changing out the vocon board? Seems like there would be more to it. I am in the market for a P25 mobile for my truck and while the XTL mobiles look nice they are a little out of my price range and it seems like the Astro Spectras go for a lot cheaper but then again it seems like one that will fit my needs rarely comes on the used market (high power remote mount) . I would like to have one to do 440 Ham plus my commercial stuff up to 470 but I doubt there is a split that will do both. I can forget the ham stuff if need be. I require P25 trunking hence the need for the PLUS model. If anyone can provide any information on the upgrade and the cost of it I would appreciate it.